// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
// Copyright (c) 2017-2018, Linaro Limited
#include <linux/slab.h>
#include <sound/soc.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include "wcd9335.h"
#include "wcd-clsh-v2.h"
struct wcd_clsh_ctrl {
int state;
int mode;
int flyback_users;
int buck_users;
int clsh_users;
int codec_version;
struct snd_soc_component *comp;
};
/* Class-H registers for codecs from and above WCD9335 */
#define WCD9XXX_A_CDC_RX0_RX_PATH_CFG0 WCD9335_REG(0xB, 0x42)
#define WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK BIT(6)
#define WCD9XXX_A_CDC_RX_PATH_CLSH_ENABLE BIT(6)
#define WCD9XXX_A_CDC_RX_PATH_CLSH_DISABLE 0
#define WCD9XXX_A_CDC_RX1_RX_PATH_CFG0 WCD9335_REG(0xB, 0x56)
#define WCD9XXX_A_CDC_RX2_RX_PATH_CFG0 WCD9335_REG(0xB, 0x6A)
#define WCD9XXX_A_CDC_CLSH_K1_MSB WCD9335_REG(0xC, 0x08)
#define WCD9XXX_A_CDC_CLSH_K1_MSB_COEF_MASK GENMASK(3, 0)
#define WCD9XXX_A_CDC_CLSH_K1_LSB WCD9335_REG(0xC, 0x09)
#define WCD9XXX_A_CDC_CLSH_K1_LSB_COEF_MASK GENMASK(7, 0)
#define WCD9XXX_A_ANA_RX_SUPPLIES WCD9335_REG(0x6, 0x08)
#define WCD9XXX_A_ANA_RX_REGULATOR_MODE_MASK BIT(1)
#define WCD9XXX_A_ANA_RX_REGULATOR_MODE_CLS_H 0
#define WCD9XXX_A_ANA_RX_REGULATOR_MODE_CLS_AB BIT(1)
#define WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_MASK BIT(2)
#define WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_UHQA BIT(2)
#define WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_DEFAULT 0
#define WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_MASK BIT(3)
#define WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_UHQA BIT(3)
#define WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_DEFAULT 0
#define WCD9XXX_A_ANA_RX_VNEG_EN_MASK BIT(6)
#define WCD9XXX_A_ANA_RX_VNEG_EN_SHIFT 6
#define WCD9XXX_A_ANA_RX_VNEG_ENABLE BIT(6)
#define WCD9XXX_A_ANA_RX_VNEG_DISABLE 0
#define WCD9XXX_A_ANA_RX_VPOS_EN_MASK BIT(7)
#define WCD9XXX_A_ANA_RX_VPOS_EN_SHIFT 7
#define WCD9XXX_A_ANA_RX_VPOS_ENABLE BIT(7)
#define WCD9XXX_A_ANA_RX_VPOS_DISABLE 0
#define WCD9XXX_A_ANA_HPH WCD9335_REG(0x6, 0x09)
#define WCD9XXX_A_ANA_HPH_PWR_LEVEL_MASK GENMASK(3, 2)
#define WCD9XXX_A_ANA_HPH_PWR_LEVEL_UHQA 0x08
#define WCD9XXX_A_ANA_HPH_PWR_LEVEL_LP 0x04
#define WCD9XXX_A_ANA_HPH_PWR_LEVEL_NORMAL 0x0
#define WCD9XXX_A_CDC_CLSH_CRC WCD9335_REG(0xC, 0x01)
#define WCD9XXX_A_CDC_CLSH_CRC_CLK_EN_MASK BIT(0)
#define WCD9XXX_A_CDC_CLSH_CRC_CLK_ENABLE BIT(0)
#define WCD9XXX_A_CDC_CLSH_CRC_CLK_DISABLE 0
#define WCD9XXX_FLYBACK_EN WCD9335_REG(0x6, 0xA4)
#define WCD9XXX_FLYBACK_EN_DELAY_SEL_MASK GENMASK(6, 5)
#define WCD9XXX_FLYBACK_EN_DELAY_26P25_US 0x40
#define WCD9XXX_FLYBACK_EN_RESET_BY_EXT_MASK BIT(4)
#define WCD9XXX_FLYBACK_EN_PWDN_WITHOUT_DELAY BIT(4)
#define WCD9XXX_FLYBACK_EN_PWDN_WITH_DELAY 0
#define WCD9XXX_RX_BIAS_FLYB_BUFF WCD9335_REG(0x6, 0xC7)
#define WCD9XXX_RX_BIAS_FLYB_VNEG_5_UA_MASK GENMASK(7, 4)
#define WCD9XXX_RX_BIAS_FLYB_VPOS_5_UA_MASK GENMASK(3, 0)
#define WCD9XXX_HPH_L_EN WCD9335_REG(0x6, 0xD3)
#define WCD9XXX_HPH_CONST_SEL_L_MASK GENMASK(7, 3)
#define WCD9XXX_HPH_CONST_SEL_BYPASS 0
#define WCD9XXX_HPH_CONST_SEL_LP_PATH 0x40
#define WCD9XXX_HPH_CONST_SEL_HQ_PATH 0x80
#define WCD9XXX_HPH_R_EN WCD9335_REG(0x6, 0xD6)
#define WCD9XXX_HPH_REFBUFF_UHQA_CTL WCD9335_REG(0x6, 0xDD)
#define WCD9XXX_HPH_REFBUFF_UHQA_GAIN_MASK GENMASK(2, 0)
#define WCD9XXX_CLASSH_CTRL_VCL_2 WCD9335_REG(0x6, 0x9B)
#define WCD9XXX_CLASSH_CTRL_VCL_2_VREF_FILT_1_MASK GENMASK(5, 4)
#define WCD9XXX_CLASSH_CTRL_VCL_VREF_FILT_R_50KOHM 0x20
#define WCD9XXX_CLASSH_CTRL_VCL_VREF_FILT_R_0KOHM 0x0
#define WCD9XXX_CDC_RX1_RX_PATH_CTL WCD9335_REG(0xB, 0x55)
#define WCD9XXX_CDC_RX2_RX_PATH_CTL WCD9335_REG(0xB, 0x69)
#define WCD9XXX_CDC_CLK_RST_CTRL_MCLK_CONTROL WCD9335_REG(0xD, 0x41)
#define WCD9XXX_CDC_CLK_RST_CTRL_MCLK_EN_MASK BIT(0)
#define WCD9XXX_CDC_CLK_RST_CTRL_MCLK_11P3_EN_MASK BIT(1)
#define WCD9XXX_CLASSH_CTRL_CCL_1 WCD9335_REG(0x6, 0x9C)
#define WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_MASK GENMASK(7, 4)
#define WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_50MA 0x50
#define WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_30MA 0x30
#define WCD9XXX_BASE_ADDRESS 0x3000
#define WCD9XXX_ANA_RX_SUPPLIES (WCD9XXX_BASE_ADDRESS+0x008)
#define WCD9XXX_ANA_HPH (WCD9XXX_BASE_ADDRESS+0x009)
#define WCD9XXX_CLASSH_MODE_2 (WCD9XXX_BASE_ADDRESS+0x098)
#define WCD9XXX_CLASSH_MODE_3 (WCD9XXX_BASE_ADDRESS+0x099)
#define WCD9XXX_FLYBACK_VNEG_CTRL_1 (WCD9XXX_BASE_ADDRESS+0x0A5)
#define WCD9XXX_FLYBACK_VNEG_CTRL_4 (WCD9XXX_BASE_ADDRESS+0x0A8)
#define WCD9XXX_FLYBACK_VNEGDAC_CTRL_2 (WCD9XXX_BASE_ADDRESS+0x0AF)
#define WCD9XXX_RX_BIAS_HPH_LOWPOWER (WCD9XXX_BASE_ADDRESS+0x0BF)
#define WCD9XXX_V3_RX_BIAS_FLYB_BUFF (WCD9XXX_BASE_ADDRESS+0x0C7)
#define WCD9XXX_HPH_PA_CTL1 (WCD9XXX_BASE_ADDRESS+0x0D1)
#define WCD9XXX_HPH_NEW_INT_PA_MISC2 (WCD9XXX_BASE_ADDRESS+0x138)
#define CLSH_REQ_ENABLE true
#define CLSH_REQ_DISABLE false
#define WCD_USLEEP_RANGE 50
enum {
DAC_GAIN_0DB = 0,
DAC_GAIN_0P2DB,
DAC_GAIN_0P4DB,
DAC_GAIN_0P6DB,
DAC_GAIN_0P8DB,
DAC_GAIN_M0P2DB,
DAC_GAIN_M0P4DB,
DAC_GAIN_M0P6DB,
};
static inline void wcd_enable_clsh_block(struct wcd_clsh_ctrl *ctrl,
bool enable)
{
struct snd_soc_component *comp = ctrl->comp;
if ((enable && ++ctrl->clsh_users == 1) ||
(!enable && --ctrl->clsh_users == 0))
snd_soc_component_update_bits(comp, WCD9XXX_A_CDC_CLSH_CRC,
WCD9XXX_A_CDC_CLSH_CRC_CLK_EN_MASK,
enable);
if (ctrl->clsh_users < 0)
ctrl->clsh_users = 0;
}
static inline void wcd_clsh_set_buck_mode(struct snd_soc_component *comp,
int mode)
{
/* set to HIFI */
if (mode == CLS_H_HIFI)
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_MASK,
WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_UHQA);
else
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_MASK,
WCD9XXX_A_ANA_RX_VPOS_PWR_LVL_DEFAULT);
}
static void wcd_clsh_v3_set_buck_mode(struct snd_soc_component *component,
int mode)
{
if (mode == CLS_H_HIFI || mode == CLS_H_LOHIFI ||
mode == CLS_AB_HIFI || mode == CLS_AB_LOHIFI)
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
0x08, 0x08); /* set to HIFI */
else
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
0x08, 0x00); /* set to default */
}
static inline void wcd_clsh_set_flyback_mode(struct snd_soc_component *comp,
int mode)
{
/* set to HIFI */
if (mode == CLS_H_HIFI)
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_MASK,
WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_UHQA);
else
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_MASK,
WCD9XXX_A_ANA_RX_VNEG_PWR_LVL_DEFAULT);
}
static void wcd_clsh_buck_ctrl(struct wcd_clsh_ctrl *ctrl,
int mode,
bool enable)
{
struct snd_soc_component *comp = ctrl->comp;
/* enable/disable buck */
if ((enable && (++ctrl->buck_users == 1)) ||
(!enable && (--ctrl->buck_users == 0)))
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VPOS_EN_MASK,
enable << WCD9XXX_A_ANA_RX_VPOS_EN_SHIFT);
/*
* 500us sleep is required after buck enable/disable
* as per HW requirement
*/
usleep_range(500, 500 + WCD_USLEEP_RANGE);
}
static void wcd_clsh_v3_buck_ctrl(struct snd_soc_component *component,
struct wcd_clsh_ctrl *ctrl,
int mode,
bool enable)
{
/* enable/disable buck */
if ((enable && (++ctrl->buck_users == 1)) ||
(!enable && (--ctrl->buck_users == 0))) {
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
(1 << 7), (enable << 7));
/*
* 500us sleep is required after buck enable/disable
* as per HW requirement
*/
usleep_range(500, 510);
if (mode == CLS_H_LOHIFI || mode == CLS_H_ULP ||
mode == CLS_H_HIFI || mode == CLS_H_LP)
snd_soc_component_update_bits(component,
WCD9XXX_CLASSH_MODE_3,
0x02, 0x00);
snd_soc_component_update_bits(component,
WCD9XXX_CLASSH_MODE_2,
0xFF, 0x3A);
/* 500usec delay is needed as per HW requirement */
usleep_range(500, 500 + WCD_USLEEP_RANGE);
}
}
static void wcd_clsh_flyback_ctrl(struct wcd_clsh_ctrl *ctrl,
int mode,
bool enable)
{
struct snd_soc_component *comp = ctrl->comp;
/* enable/disable flyback */
if ((enable && (++ctrl->flyback_users == 1)) ||
(!enable && (--ctrl->flyback_users == 0))) {
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_VNEG_EN_MASK,
enable << WCD9XXX_A_ANA_RX_VNEG_EN_SHIFT);
/* 100usec delay is needed as per HW requirement */
usleep_range(100, 110);
}
/*
* 500us sleep is required after flyback enable/disable
* as per HW requirement
*/
usleep_range(500, 500 + WCD_USLEEP_RANGE);
}
static void wcd_clsh_set_gain_path(struct wcd_clsh_ctrl *ctrl, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
int val = 0;
switch (mode) {
case CLS_H_NORMAL:
case CLS_AB:
val = WCD9XXX_HPH_CONST_SEL_BYPASS;
break;
case CLS_H_HIFI:
val = WCD9XXX_HPH_CONST_SEL_HQ_PATH;
break;
case CLS_H_LP:
val = WCD9XXX_HPH_CONST_SEL_LP_PATH;
break;
}
snd_soc_component_update_bits(comp, WCD9XXX_HPH_L_EN,
WCD9XXX_HPH_CONST_SEL_L_MASK,
val);
snd_soc_component_update_bits(comp, WCD9XXX_HPH_R_EN,
WCD9XXX_HPH_CONST_SEL_L_MASK,
val);
}
static void wcd_clsh_v2_set_hph_mode(struct snd_soc_component *comp, int mode)
{
int val = 0, gain = 0, res_val;
int ipeak = WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_50MA;
res_val = WCD9XXX_CLASSH_CTRL_VCL_VREF_FILT_R_0KOHM;
switch (mode) {
case CLS_H_NORMAL:
res_val = WCD9XXX_CLASSH_CTRL_VCL_VREF_FILT_R_50KOHM;
val = WCD9XXX_A_ANA_HPH_PWR_LEVEL_NORMAL;
gain = DAC_GAIN_0DB;
ipeak = WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_50MA;
break;
case CLS_AB:
val = WCD9XXX_A_ANA_HPH_PWR_LEVEL_NORMAL;
gain = DAC_GAIN_0DB;
ipeak = WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_50MA;
break;
case CLS_H_HIFI:
val = WCD9XXX_A_ANA_HPH_PWR_LEVEL_UHQA;
gain = DAC_GAIN_M0P2DB;
ipeak = WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_50MA;
break;
case CLS_H_LP:
val = WCD9XXX_A_ANA_HPH_PWR_LEVEL_LP;
ipeak = WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_30MA;
break;
}
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_HPH,
WCD9XXX_A_ANA_HPH_PWR_LEVEL_MASK, val);
snd_soc_component_update_bits(comp, WCD9XXX_CLASSH_CTRL_VCL_2,
WCD9XXX_CLASSH_CTRL_VCL_2_VREF_FILT_1_MASK,
res_val);
if (mode != CLS_H_LP)
snd_soc_component_update_bits(comp,
WCD9XXX_HPH_REFBUFF_UHQA_CTL,
WCD9XXX_HPH_REFBUFF_UHQA_GAIN_MASK,
gain);
snd_soc_component_update_bits(comp, WCD9XXX_CLASSH_CTRL_CCL_1,
WCD9XXX_CLASSH_CTRL_CCL_1_DELTA_IPEAK_MASK,
ipeak);
}
static void wcd_clsh_v3_set_hph_mode(struct snd_soc_component *component,
int mode)
{
u8 val;
switch (mode) {
case CLS_H_NORMAL:
val = 0x00;
break;
case CLS_AB:
case CLS_H_ULP:
val = 0x0C;
break;
case CLS_AB_HIFI:
case CLS_H_HIFI:
val = 0x08;
break;
case CLS_H_LP:
case CLS_H_LOHIFI:
case CLS_AB_LP:
case CLS_AB_LOHIFI:
val = 0x04;
break;
default:
dev_err(component->dev, "%s:Invalid mode %d\n", __func__, mode);
return;
}
snd_soc_component_update_bits(component, WCD9XXX_ANA_HPH, 0x0C, val);
}
void wcd_clsh_set_hph_mode(struct wcd_clsh_ctrl *ctrl, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (ctrl->codec_version >= WCD937X)
wcd_clsh_v3_set_hph_mode(comp, mode);
else
wcd_clsh_v2_set_hph_mode(comp, mode);
}
EXPORT_SYMBOL_GPL(wcd_clsh_set_hph_mode);
static void wcd_clsh_set_flyback_current(struct snd_soc_component *comp,
int mode)
{
snd_soc_component_update_bits(comp, WCD9XXX_RX_BIAS_FLYB_BUFF,
WCD9XXX_RX_BIAS_FLYB_VPOS_5_UA_MASK, 0x0A);
snd_soc_component_update_bits(comp, WCD9XXX_RX_BIAS_FLYB_BUFF,
WCD9XXX_RX_BIAS_FLYB_VNEG_5_UA_MASK, 0x0A);
/* Sleep needed to avoid click and pop as per HW requirement */
usleep_range(100, 110);
}
static void wcd_clsh_set_buck_regulator_mode(struct snd_soc_component *comp,
int mode)
{
if (mode == CLS_AB)
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_REGULATOR_MODE_MASK,
WCD9XXX_A_ANA_RX_REGULATOR_MODE_CLS_AB);
else
snd_soc_component_update_bits(comp, WCD9XXX_A_ANA_RX_SUPPLIES,
WCD9XXX_A_ANA_RX_REGULATOR_MODE_MASK,
WCD9XXX_A_ANA_RX_REGULATOR_MODE_CLS_H);
}
static void wcd_clsh_v3_set_buck_regulator_mode(struct snd_soc_component *component,
int mode)
{
snd_soc_component_update_bits(component, WCD9XXX_ANA_RX_SUPPLIES,
0x02, 0x00);
}
static void wcd_clsh_v3_set_flyback_mode(struct snd_soc_component *component,
int mode)
{
if (mode == CLS_H_HIFI || mode == CLS_H_LOHIFI ||
mode == CLS_AB_HIFI || mode == CLS_AB_LOHIFI) {
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
0x04, 0x04);
snd_soc_component_update_bits(component,
WCD9XXX_FLYBACK_VNEG_CTRL_4,
0xF0, 0x80);
} else {
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
0x04, 0x00); /* set to Default */
snd_soc_component_update_bits(component,
WCD9XXX_FLYBACK_VNEG_CTRL_4,
0xF0, 0x70);
}
}
static void wcd_clsh_v3_force_iq_ctl(struct snd_soc_component *component,
int mode, bool enable)
{
if (enable) {
snd_soc_component_update_bits(component,
WCD9XXX_FLYBACK_VNEGDAC_CTRL_2,
0xE0, 0xA0);
/* 100usec delay is needed as per HW requirement */
usleep_range(100, 110);
snd_soc_component_update_bits(component,
WCD9XXX_CLASSH_MODE_3,
0x02, 0x02);
snd_soc_component_update_bits(component,
WCD9XXX_CLASSH_MODE_2,
0xFF, 0x1C);
if (mode == CLS_H_LOHIFI || mode == CLS_AB_LOHIFI) {
snd_soc_component_update_bits(component,
WCD9XXX_HPH_NEW_INT_PA_MISC2,
0x20, 0x20);
snd_soc_component_update_bits(component,
WCD9XXX_RX_BIAS_HPH_LOWPOWER,
0xF0, 0xC0);
snd_soc_component_update_bits(component,
WCD9XXX_HPH_PA_CTL1,
0x0E, 0x02);
}
} else {
snd_soc_component_update_bits(component,
WCD9XXX_HPH_NEW_INT_PA_MISC2,
0x20, 0x00);
snd_soc_component_update_bits(component,
WCD9XXX_RX_BIAS_HPH_LOWPOWER,
0xF0, 0x80);
snd_soc_component_update_bits(component,
WCD9XXX_HPH_PA_CTL1,
0x0E, 0x06);
}
}
static void wcd_clsh_v3_flyback_ctrl(struct snd_soc_component *component,
struct wcd_clsh_ctrl *ctrl,
int mode,
bool enable)
{
/* enable/disable flyback */
if ((enable && (++ctrl->flyback_users == 1)) ||
(!enable && (--ctrl->flyback_users == 0))) {
snd_soc_component_update_bits(component,
WCD9XXX_FLYBACK_VNEG_CTRL_1,
0xE0, 0xE0);
snd_soc_component_update_bits(component,
WCD9XXX_ANA_RX_SUPPLIES,
(1 << 6), (enable << 6));
/*
* 100us sleep is required after flyback enable/disable
* as per HW requirement
*/
usleep_range(100, 110);
snd_soc_component_update_bits(component,
WCD9XXX_FLYBACK_VNEGDAC_CTRL_2,
0xE0, 0xE0);
/* 500usec delay is needed as per HW requirement */
usleep_range(500, 500 + WCD_USLEEP_RANGE);
}
}
static void wcd_clsh_v3_set_flyback_current(struct snd_soc_component *component,
int mode)
{
snd_soc_component_update_bits(component, WCD9XXX_V3_RX_BIAS_FLYB_BUFF,
0x0F, 0x0A);
snd_soc_component_update_bits(component, WCD9XXX_V3_RX_BIAS_FLYB_BUFF,
0xF0, 0xA0);
/* Sleep needed to avoid click and pop as per HW requirement */
usleep_range(100, 110);
}
static void wcd_clsh_v3_state_aux(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *component = ctrl->comp;
if (is_enable) {
wcd_clsh_v3_set_buck_mode(component, mode);
wcd_clsh_v3_set_flyback_mode(component, mode);
wcd_clsh_v3_flyback_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_flyback_current(component, mode);
wcd_clsh_v3_buck_ctrl(component, ctrl, mode, true);
} else {
wcd_clsh_v3_buck_ctrl(component, ctrl, mode, false);
wcd_clsh_v3_flyback_ctrl(component, ctrl, mode, false);
wcd_clsh_v3_set_flyback_mode(component, CLS_H_NORMAL);
wcd_clsh_v3_set_buck_mode(component, CLS_H_NORMAL);
}
}
static void wcd_clsh_state_lo(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (mode != CLS_AB) {
dev_err(comp->dev, "%s: LO cannot be in this mode: %d\n",
__func__, mode);
return;
}
if (is_enable) {
wcd_clsh_set_buck_regulator_mode(comp, mode);
wcd_clsh_set_buck_mode(comp, mode);
wcd_clsh_set_flyback_mode(comp, mode);
wcd_clsh_flyback_ctrl(ctrl, mode, true);
wcd_clsh_set_flyback_current(comp, mode);
wcd_clsh_buck_ctrl(ctrl, mode, true);
} else {
wcd_clsh_buck_ctrl(ctrl, mode, false);
wcd_clsh_flyback_ctrl(ctrl, mode, false);
wcd_clsh_set_flyback_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_regulator_mode(comp, CLS_H_NORMAL);
}
}
static void wcd_clsh_v3_state_hph_r(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *component = ctrl->comp;
if (mode == CLS_H_NORMAL) {
dev_dbg(component->dev, "%s: Normal mode not applicable for hph_r\n",
__func__);
return;
}
if (is_enable) {
wcd_clsh_v3_set_buck_regulator_mode(component, mode);
wcd_clsh_v3_set_flyback_mode(component, mode);
wcd_clsh_v3_force_iq_ctl(component, mode, true);
wcd_clsh_v3_flyback_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_flyback_current(component, mode);
wcd_clsh_v3_set_buck_mode(component, mode);
wcd_clsh_v3_buck_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_hph_mode(component, mode);
} else {
wcd_clsh_v3_set_hph_mode(component, CLS_H_NORMAL);
/* buck and flyback set to default mode and disable */
wcd_clsh_v3_flyback_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_buck_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_force_iq_ctl(component, CLS_H_NORMAL, false);
wcd_clsh_v3_set_flyback_mode(component, CLS_H_NORMAL);
wcd_clsh_v3_set_buck_mode(component, CLS_H_NORMAL);
}
}
static void wcd_clsh_state_hph_r(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (mode == CLS_H_NORMAL) {
dev_err(comp->dev, "%s: Normal mode not applicable for hph_r\n",
__func__);
return;
}
if (is_enable) {
if (mode != CLS_AB) {
wcd_enable_clsh_block(ctrl, true);
/*
* These K1 values depend on the Headphone Impedance
* For now it is assumed to be 16 ohm
*/
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_CLSH_K1_MSB,
WCD9XXX_A_CDC_CLSH_K1_MSB_COEF_MASK,
0x00);
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_CLSH_K1_LSB,
WCD9XXX_A_CDC_CLSH_K1_LSB_COEF_MASK,
0xC0);
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX2_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_ENABLE);
}
wcd_clsh_set_buck_regulator_mode(comp, mode);
wcd_clsh_set_flyback_mode(comp, mode);
wcd_clsh_flyback_ctrl(ctrl, mode, true);
wcd_clsh_set_flyback_current(comp, mode);
wcd_clsh_set_buck_mode(comp, mode);
wcd_clsh_buck_ctrl(ctrl, mode, true);
wcd_clsh_v2_set_hph_mode(comp, mode);
wcd_clsh_set_gain_path(ctrl, mode);
} else {
wcd_clsh_v2_set_hph_mode(comp, CLS_H_NORMAL);
if (mode != CLS_AB) {
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX2_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_DISABLE);
wcd_enable_clsh_block(ctrl, false);
}
/* buck and flyback set to default mode and disable */
wcd_clsh_buck_ctrl(ctrl, CLS_H_NORMAL, false);
wcd_clsh_flyback_ctrl(ctrl, CLS_H_NORMAL, false);
wcd_clsh_set_flyback_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_regulator_mode(comp, CLS_H_NORMAL);
}
}
static void wcd_clsh_v3_state_hph_l(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *component = ctrl->comp;
if (mode == CLS_H_NORMAL) {
dev_dbg(component->dev, "%s: Normal mode not applicable for hph_l\n",
__func__);
return;
}
if (is_enable) {
wcd_clsh_v3_set_buck_regulator_mode(component, mode);
wcd_clsh_v3_set_flyback_mode(component, mode);
wcd_clsh_v3_force_iq_ctl(component, mode, true);
wcd_clsh_v3_flyback_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_flyback_current(component, mode);
wcd_clsh_v3_set_buck_mode(component, mode);
wcd_clsh_v3_buck_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_hph_mode(component, mode);
} else {
wcd_clsh_v3_set_hph_mode(component, CLS_H_NORMAL);
/* set buck and flyback to Default Mode */
wcd_clsh_v3_flyback_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_buck_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_force_iq_ctl(component, CLS_H_NORMAL, false);
wcd_clsh_v3_set_flyback_mode(component, CLS_H_NORMAL);
wcd_clsh_v3_set_buck_mode(component, CLS_H_NORMAL);
}
}
static void wcd_clsh_state_hph_l(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (mode == CLS_H_NORMAL) {
dev_err(comp->dev, "%s: Normal mode not applicable for hph_l\n",
__func__);
return;
}
if (is_enable) {
if (mode != CLS_AB) {
wcd_enable_clsh_block(ctrl, true);
/*
* These K1 values depend on the Headphone Impedance
* For now it is assumed to be 16 ohm
*/
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_CLSH_K1_MSB,
WCD9XXX_A_CDC_CLSH_K1_MSB_COEF_MASK,
0x00);
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_CLSH_K1_LSB,
WCD9XXX_A_CDC_CLSH_K1_LSB_COEF_MASK,
0xC0);
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX1_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_ENABLE);
}
wcd_clsh_set_buck_regulator_mode(comp, mode);
wcd_clsh_set_flyback_mode(comp, mode);
wcd_clsh_flyback_ctrl(ctrl, mode, true);
wcd_clsh_set_flyback_current(comp, mode);
wcd_clsh_set_buck_mode(comp, mode);
wcd_clsh_buck_ctrl(ctrl, mode, true);
wcd_clsh_v2_set_hph_mode(comp, mode);
wcd_clsh_set_gain_path(ctrl, mode);
} else {
wcd_clsh_v2_set_hph_mode(comp, CLS_H_NORMAL);
if (mode != CLS_AB) {
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX1_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_DISABLE);
wcd_enable_clsh_block(ctrl, false);
}
/* set buck and flyback to Default Mode */
wcd_clsh_buck_ctrl(ctrl, CLS_H_NORMAL, false);
wcd_clsh_flyback_ctrl(ctrl, CLS_H_NORMAL, false);
wcd_clsh_set_flyback_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_regulator_mode(comp, CLS_H_NORMAL);
}
}
static void wcd_clsh_v3_state_ear(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *component = ctrl->comp;
if (is_enable) {
wcd_clsh_v3_set_buck_regulator_mode(component, mode);
wcd_clsh_v3_set_flyback_mode(component, mode);
wcd_clsh_v3_force_iq_ctl(component, mode, true);
wcd_clsh_v3_flyback_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_flyback_current(component, mode);
wcd_clsh_v3_set_buck_mode(component, mode);
wcd_clsh_v3_buck_ctrl(component, ctrl, mode, true);
wcd_clsh_v3_set_hph_mode(component, mode);
} else {
wcd_clsh_v3_set_hph_mode(component, CLS_H_NORMAL);
/* set buck and flyback to Default Mode */
wcd_clsh_v3_flyback_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_buck_ctrl(component, ctrl, CLS_H_NORMAL, false);
wcd_clsh_v3_force_iq_ctl(component, CLS_H_NORMAL, false);
wcd_clsh_v3_set_flyback_mode(component, CLS_H_NORMAL);
wcd_clsh_v3_set_buck_mode(component, CLS_H_NORMAL);
}
}
static void wcd_clsh_state_ear(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (mode != CLS_H_NORMAL) {
dev_err(comp->dev, "%s: mode: %d cannot be used for EAR\n",
__func__, mode);
return;
}
if (is_enable) {
wcd_enable_clsh_block(ctrl, true);
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX0_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_ENABLE);
wcd_clsh_set_buck_mode(comp, mode);
wcd_clsh_set_flyback_mode(comp, mode);
wcd_clsh_flyback_ctrl(ctrl, mode, true);
wcd_clsh_set_flyback_current(comp, mode);
wcd_clsh_buck_ctrl(ctrl, mode, true);
} else {
snd_soc_component_update_bits(comp,
WCD9XXX_A_CDC_RX0_RX_PATH_CFG0,
WCD9XXX_A_CDC_RX_PATH_CLSH_EN_MASK,
WCD9XXX_A_CDC_RX_PATH_CLSH_DISABLE);
wcd_enable_clsh_block(ctrl, false);
wcd_clsh_buck_ctrl(ctrl, mode, false);
wcd_clsh_flyback_ctrl(ctrl, mode, false);
wcd_clsh_set_flyback_mode(comp, CLS_H_NORMAL);
wcd_clsh_set_buck_mode(comp, CLS_H_NORMAL);
}
}
static int _wcd_clsh_ctrl_set_state(struct wcd_clsh_ctrl *ctrl, int req_state,
bool is_enable, int mode)
{
switch (req_state) {
case WCD_CLSH_STATE_EAR:
if (ctrl->codec_version >= WCD937X)
wcd_clsh_v3_state_ear(ctrl, req_state, is_enable, mode);
else
wcd_clsh_state_ear(ctrl, req_state, is_enable, mode);
break;
case WCD_CLSH_STATE_HPHL:
if (ctrl->codec_version >= WCD937X)
wcd_clsh_v3_state_hph_l(ctrl, req_state, is_enable, mode);
else
wcd_clsh_state_hph_l(ctrl, req_state, is_enable, mode);
break;
case WCD_CLSH_STATE_HPHR:
if (ctrl->codec_version >= WCD937X)
wcd_clsh_v3_state_hph_r(ctrl, req_state, is_enable, mode);
else
wcd_clsh_state_hph_r(ctrl, req_state, is_enable, mode);
break;
case WCD_CLSH_STATE_LO:
if (ctrl->codec_version < WCD937X)
wcd_clsh_state_lo(ctrl, req_state, is_enable, mode);
break;
case WCD_CLSH_STATE_AUX:
if (ctrl->codec_version >= WCD937X)
wcd_clsh_v3_state_aux(ctrl, req_state, is_enable, mode);
break;
default:
break;
}
return 0;
}
/*
* Function: wcd_clsh_is_state_valid
* Params: state
* Description:
* Provides information on valid states of Class H configuration
*/
static bool wcd_clsh_is_state_valid(int state)
{
switch (state) {
case WCD_CLSH_STATE_IDLE:
case WCD_CLSH_STATE_EAR:
case WCD_CLSH_STATE_HPHL:
case WCD_CLSH_STATE_HPHR:
case WCD_CLSH_STATE_LO:
case WCD_CLSH_STATE_AUX:
return true;
default:
return false;
};
}
/*
* Function: wcd_clsh_fsm
* Params: ctrl, req_state, req_type, clsh_event
* Description:
* This function handles PRE DAC and POST DAC conditions of different devices
* and updates class H configuration of different combination of devices
* based on validity of their states. ctrl will contain current
* class h state information
*/
int wcd_clsh_ctrl_set_state(struct wcd_clsh_ctrl *ctrl,
enum wcd_clsh_event clsh_event,
int nstate,
enum wcd_clsh_mode mode)
{
struct snd_soc_component *comp = ctrl->comp;
if (nstate == ctrl->state)
return 0;
if (!wcd_clsh_is_state_valid(nstate)) {
dev_err(comp->dev, "Class-H not a valid new state:\n");
return -EINVAL;
}
switch (clsh_event) {
case WCD_CLSH_EVENT_PRE_DAC:
_wcd_clsh_ctrl_set_state(ctrl, nstate, CLSH_REQ_ENABLE, mode);
break;
case WCD_CLSH_EVENT_POST_PA:
_wcd_clsh_ctrl_set_state(ctrl, nstate, CLSH_REQ_DISABLE, mode);
break;
}
ctrl->state = nstate;
ctrl->mode = mode;
return 0;
}
EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_set_state);
int wcd_clsh_ctrl_get_state(struct wcd_clsh_ctrl *ctrl)
{
return ctrl->state;
}
EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_get_state);
struct wcd_clsh_ctrl *wcd_clsh_ctrl_alloc(struct snd_soc_component *comp,
int version)
{
struct wcd_clsh_ctrl *ctrl;
ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
return ERR_PTR(-ENOMEM);
ctrl->state = WCD_CLSH_STATE_IDLE;
ctrl->comp = comp;
ctrl->codec_version = version;
return ctrl;
}
EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_alloc);
void wcd_clsh_ctrl_free(struct wcd_clsh_ctrl *ctrl)
{
kfree(ctrl);
}
EXPORT_SYMBOL_GPL(wcd_clsh_ctrl_free);
MODULE_DESCRIPTION("WCD93XX Class-H driver");
MODULE_LICENSE("GPL");
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